2 x Skye - double wall glass bistro mugs - Coffee/Tea - 10oz / 300ml - SALE PRICE! Handmade by artisans 4 x double wall borosilicate glass mugs (medium size - 10oz / 300ml) Lightweight insulated glass mugs keep drinks hot or cold Height: 4 inches / Width: 3.5 inches Liquids appear to float thanks to the 2 wall layer design